# IM vs Open Shoulder

IM and Open Shoulder are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IM ships an update every 3 months, Open Shoulder every 2 months. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | IM | Open Shoulder |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 22 MB | 35 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HUANG JUICHI](https://appshunter.io/developer/1072611022) | [Mei Lin Chen](https://appshunter.io/developer/1656873066) |

## What reviewers say

### IM

[App page](https://appshunter.io/ios/app/im-dsp/id1072611023)

This app offers a comprehensive smart community management system for commercial and residential buildings. It integrates various systems like visitor management, access control, and security alarms, designed with modularity and smart building standards.

**Highlights:** Modular design, Smart building standards compliance, High integration with multiple hardware, Suitable for commercial and residential use, Integrated visitor, access control, and alarm systems, Comprehensive community management

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Open Shoulder

[App page](https://appshunter.io/ios/app/open-shoulder/id1663708137)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IM free?

IM is free to download, with no in-app purchases.

### Is Open Shoulder free?

Open Shoulder is free to download, with no in-app purchases.

### Do IM or Open Shoulder have ads?

Neither IM nor Open Shoulder shows ads.

### Which is updated more often, IM or Open Shoulder?

IM ships an update every 3 months, and Open Shoulder every 2 months. Most recently, IM was updated on September 29, 2026 and Open Shoulder on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*